Three Frontiers Corps personnel were martyred when suspected terrorists opened fire on their team from across the Pak-Afghan border in Mohmand Agency on Friday, an Inter-Services Public Relations (ISPR) statement said.

The troops were targeted when they busy in the construction of a new border post at Shunkrai area of Mohmand tribal region near the border with Afghanistan.

A protection party that was accompanying the troops responded to the attack, killing five suspected terrorists and leaving as many injured, the ISPR said.

The fleeing terrorists could be seen carrying with them the bodies of killed militants and those injured in retaliatory fire, the ISPR claimed.

The military's media wing alleged that through such attacks, Pakistan is "paying [the] price" of Afghan security forces' lack of "capacity" and ungoverned spaces on Afghan side of the border.